6kVA – 48kVA
208/120 VAC or 240/120 VAC Single Phase
Scalable modular UPS with N+1 redundancy and universal slots for continuous, high-efficiency power in residential, edge, and industrial applications.
The Xtreme Power M90S-12S is the largest chassis in the M90S single-phase modular UPS family, delivering up to 48 kW of scalable online double-conversion protection. With 12 universal slots, each bay can hold either a power module or a battery module, giving maximum flexibility to configure for capacity, redundancy, or extended runtime.
The M90S-12S includes a 10” color touch LCD display, front-access only design, integrated maintenance bypass, and hot-swappable modules. It delivers reliable, clean power for demanding applications — from advanced AV systems to edge compute containers and luxury residential energy platforms.
The M90S-12S UPS is built for enterprise, AV, and luxury residential environments requiring extended runtime and large-scale single-phase power:
Evaluating alternatives or standardizing across sites often requires a side-by-side comparison.
See how the Xtreme Power M90S UPS compares to APC, Eaton, Vertiv, RoseWater and Toshiba UPS platforms by voltage class, topology, runtime, and lifecycle cost.
View all M90S UPS comparisons
https://xpcc.com/m90s-modular-ups-competitive-comparisons/
The M90S-12S UPS provides 6–48 kW of scalable single-phase protection in a front-access modular chassis. With universal slots, extended runtime options, and a 10” system LCD, it is the premium choice for AV, broadcast, edge compute, and whole-home luxury applications.
Contact Us | View All Products | UPS Selector
(800) 582-4524
| MODEL NUMBER | M90S-12S6K | M90S-12S12K | M90S-12S18K | M90S-12S24K | M90S-12S30K | M90S-12S36K | M90S-12S42K | M90S-12S48K | |
| CAPACITY | Power Rating | 6kW | 12kW | 18kW | 24kW | 30kW | 36kW | 42kW | 48kW |
| INPUT | Voltage/Frequency Nominal | 120/208V or 120/240V // 50/60Hz auto-sensing | 120/240V | ||||||
| Connections | 2PH+N+G | ||||||||
| OUTPUT | Voltage & Frequency | 120/208V or 120/240V // 50/60Hz auto-sensing | 120/240V | ||||||
| Connections | 2PH+N | ||||||||
| Efficiency / THD (full load) | Up to 98% ECO mode, 93% online mode / ≤2% (Linear load);≤3% (Non linear load) | ||||||||
| Overload Capacity | 100% – 110% for 30 min; 110% – 130% for 5min; 130% – 150% for 10s; > 150% for 200ms | ||||||||
| BATTERY SYSTEM | Nominal Voltage | +/-96VDC (default) or +/-120VDC | |||||||
| Max charging (adjustable) | 4A per Power Module | ||||||||
| MODULE | Power Module | 16.3”W x 24”D x 5.2”H / 38 lbs | |||||||
| DIMENSIONS | Battery Module (M90S-BMXRV2) | 16.3”W x 24”D x 5.2”H / 107 lbs | |||||||
| & WEIGHT | Battery Module (M90-BCBAT) | 7.3”W x 38.5”D x 3.2”H / 85 lbs | |||||||
| ENCLOSURE | M90S-12S UPS | 23.6”W x 36.0” D x 79.1”H // 586 lbs without modules | |||||||
| DIMENSIONS & WEIGHTS | M90-BC External Battery Cabinet | 23.6”W x 43.8” D x 79.1”H // 416 lbs without modules | |||||||
| ENVIRONMENT | Temperature | 0–40°C (32–104°F) | |||||||
| Altitude | 5,200 ft above sea level | ||||||||
| APPROVALS | UL-1778 (TUV), cUL, FCC A, RoHS | ||||||||
| WARRANTY | 3 year electronics, 3 year battery (USA and Canada) | ||||||||
| COMMUNICATIONS INTERFACE | RS-232, USB, dry contacts, EPO, (2) intelligent slots for optional cards (Web/SNMP, Relay, Modbus) | ||||||||
| INCLUDED IN BOX | User manual, USB cable, RS-232, ViewPower software, standard anchor brackets | ||||||||